56
Maintenance Instructions
CHECKING/SERVICING
Safety Switch System
WARNING
It is important to check and maintain the
safety switch system for safe operation of
the machine.
There are three (3) safety interlock switches on the
tractor; Seat Switch, FSC Neutral - Park Switch, and
PTO Switch.
If any of the following conditions occur during start-
ing or operating, a safety interlock switch may be
malfunctioning. Contact your Walker dealer for trou-
bleshooting and/or replacement.
·
With an operator in the seat, the engine starts with
the Forward Speed Control (FSC) and/or the PTO
engaged.
·
With an operator in the seat, the engine starts but
dies soon after the Forward Speed Control (FSC) or
PTO is engaged.
·
Without
an operator on the seat, the engine starts
and continues to run with the Forward Speed Control
(FSC) and/or PTO engaged.
·
With an operator in the seat, the Forward Speed
Control (FSC) and PTO disengaged and panel horn
works, but the starter is not engaging.
Forward Speed Control Friction Lock
The FSC friction lock is designed to
hold the se-
lected forward travel speed
when the steering le-
vers are moved and yet the friction is not too heavy
to make
moving the FSC control
difficult (too much
friction). The procedure for checking the FSC fric-
tion lock is as follows:
1. Place the FSC in the full
FORWARD
position
and pull both steering levers back; the FSC le-
ver should not move. If the FSC lever moves
back when the steering levers are pulled back,
the
friction needs to be increased.
2. With the steering levers held back, move the
FSC lever back from the
FORWARD
position.
With a proper amount of friction adjusted, the
FSC lever should move back with a slight
amount of resistance (friction). If the FSC lever
movement is “stiff”,
the friction needs to be
decreased.
If the FSC friction lock needs to be adjusted, refer to
Forward Speed Control Friction Adjustment
in
AD-
JUSTMENTS
in this section or contact your Walker
dealer.
